Mandriva Linux Security Advisory – MadWifi prior to 0.9.3.3 allowed remote attackers to cause a denial of service (panic) via a beacon frame with a large length value in the extended supported rates (xrates) element, which would trigger an assertion error.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/62544/MDVSA-2008-007.txt
Source: https://packetstormsecurity.com/files/62544/Mandriva-Linux-Security-Advisory-2008-007.html